Vicky Angel by Jacqueline Wilson

Jade is so used to being with and agreeing with Vicky, her larger-than-life best friend, that when a tragic accident occurs, she can hardly believe that Vicky’s gone. But Vicky is a spunky girl who’s not going to let a small thing like death stop her from living life to the fullest. Whether Jade is in school, running, or tentatively trying to make new friends, Vicky makes her presence felt, and it’s not always a good thing.

Jacqueline Wilson is a bestselling author in Britain. She has written several award-winning books for children, including The Suitcase Kid, Double Act, and The Lottie Project.From the Hardcover edition.

Publishers Weekly

Narrator Jude and her friend Vicky are inseparable ("We're going to be best friends for ever and ever and ever, through school, through college, through work"), until one afternoon, when Vicky is hit by a car.

Publishers Weekly

The Bookbag

Vicky pulls away from Jade and runs straight out into the road:
"and then she's in the road and then and then a car a squeal of brakes a scream a SCREAM
silence"
An ambulance is called and Jade goes with Vicky to the hospital.